HTML parser: Add show/toString() debug helper methods

third_party/WebKit/Source/core/html/parser/HTMLTreeBuilder.cpp

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  * Copyright (C) 2011, 2014 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 2784 matching lines @@
     ASSERT(m_templateInsertionModes.isEmpty());
     ASSERT(m_isAttached);
     // Warning, this may detach the parser. Do not do anything else after this.
     m_tree.finishedParsing();
 }
 
 void HTMLTreeBuilder::parseError(AtomicHTMLToken*)
 {
 }
 
+#ifndef NDEBUG
+const char* HTMLTreeBuilder::toString(HTMLTreeBuilder::InsertionMode mode)
+{
+    switch (mode) {
+#define DEFINE_STRINGIFY(mode) case mode: return #mode;
+        DEFINE_STRINGIFY(InitialMode)
+        DEFINE_STRINGIFY(BeforeHTMLMode)
+        DEFINE_STRINGIFY(BeforeHeadMode)
+        DEFINE_STRINGIFY(InHeadMode)
+        DEFINE_STRINGIFY(InHeadNoscriptMode)
+        DEFINE_STRINGIFY(AfterHeadMode)
+        DEFINE_STRINGIFY(TemplateContentsMode)
+        DEFINE_STRINGIFY(InBodyMode)
+        DEFINE_STRINGIFY(TextMode)
+        DEFINE_STRINGIFY(InTableMode)
+        DEFINE_STRINGIFY(InTableTextMode)
+        DEFINE_STRINGIFY(InCaptionMode)
+        DEFINE_STRINGIFY(InColumnGroupMode)
+        DEFINE_STRINGIFY(InTableBodyMode)
+        DEFINE_STRINGIFY(InRowMode)
+        DEFINE_STRINGIFY(InCellMode)
+        DEFINE_STRINGIFY(InSelectMode)
+        DEFINE_STRINGIFY(InSelectInTableMode)
+        DEFINE_STRINGIFY(AfterBodyMode)
+        DEFINE_STRINGIFY(InFramesetMode)
+        DEFINE_STRINGIFY(AfterFramesetMode)
+        DEFINE_STRINGIFY(AfterAfterBodyMode)
+        DEFINE_STRINGIFY(AfterAfterFramesetMode)
+#undef DEFINE_STRINGIFY
+    }
+    return "<unknown>";
+}
+#endif
+
 } // namespace blink